Erigeron philadelphicus, the Philadelphia fleabane, is a species of flowering plant in the composite family (Asteraceae). Other common names include philadelphia daisy, common fleabane, daisy fleabane, frost-root, marsh fleabane, poor robin's plantain, skevish or skervish, and, in the British Isles, robin's-plantain, but all of these names are shared with other species of fleabanes (Erigeron). It is native to North America and has been introduced to Eurasia.